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    New method for identification and localisation of an earthfault in compensated networks

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    CIRED 2019 - 65.pdf (483.7Kb)
    Paper number
    65
    Conference name
    CIRED 2019
    Conference date
    3-6 June 2019
    Conference location
    Madrid, Spain
    Peer-reviewed
    Yes
    Metadata
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    Authors
    DRUML, Gernot, Sprecher Automation GmbH, Germany
    SKRBINJEK, Oliver, Energie Steiermark, Austria
    Schmidt, Uwe, University Zittau, Germany
    Frowein, Karla, TU-Dresden, Germany
    Schegner, Peter, Technische Universitaet Dresden, Germany
    Abstract
    Due to today´s increased demands on grid operation management, new methods for earth fault localization and detection are needed. The fault localization should be performed as quickly as possible and under the condition, that the fault current at the fault location will not be significantly increased.  In today´s meshed compensated networks with increased length, only the transient relays work correctly. But these relays give a signalization only during the beginning of an earth fault. They are not able to give correct information after a change of the network-configuration. During the steady state of the earthfault more or less all existing methods cause problems. The new proposed method is based on injection of a zero-sequence current during an earthfault by tuning the Petersen-Coil.  The relays have to use a simple evaluation of the zero-sequence current in the complex plane.  Using this method, an identification of the faulty feeder as well as a distance estimation up to the earthfault location is possible.  This paper will present the first results of this evaluation.
    Publisher
    AIM
    Date
    2019-06-03
    Published in
    • CIRED 2019 Conference
    Permanent link to this record
    https://cired-repository.org/handle/20.500.12455/149
    http://dx.doi.org/10.34890/291
    ISSN
    2032-9644
    ISBN
    978-2-9602415-0-1

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